Question 16
Algebraic ExpressionsIf f(x) = 2x2 − 5x + 3, find f(x + 1)
- A.2x2 − x
- B.2x2 − x + 10
- C.4x2 + 3x + 2
- D.4x2 + 3x + 12
Show the answer and explanation
Answer: A (2x2 − x)
Explanation
f(x + 1) = 2(x + 1)² − 5(x + 1) + 3 = 2x² + 4x + 2 − 5x − 5 + 3 = 2x² − x.